Perchloric Acid Fume Hood

Airfoil Perchloric Acid Chemical Fume Hoods

This Fume Hood is specifically designed for the use of perchloric acid. A coved stainless steel liner with integral work surface, an internal water wash down system and water collection trough provide for detailed cleaning of the Hood interior. In addition, the interior baffles are also removable for cleaning to prevent the dangerous build-up of perchlorates.

Design

The Perchloric Acid Fume Hood has an internal bypass located above the sash. The bypass operates automatically, opening when the sash is closed and closing as the sash is raised. The bypass provides for a relatively constant face velocity at any sash position.

The sash frame and lower airfoil are constructed of type 316 stainless steel. The sash is glazed with 7/32" thick laminated safety glass and has full width pull and counterweight for easy up/down operation. In the closed position, the lower airfoil acts as a sash stop providing a 1" space for air to continuously sweep the work surfaces.

The interior liner, work surface and baffles are also constructed of type 316 stainless steel. A wash down spray bar is located behind the upper baffle for continuous cleaning behind the baffles. A full width trough is located below the lower baffle to collect the wash down water from both the Hood and ductwork.

Double wall construction of the superstructure allows for installation of service fixtures and routing of interior plumbing and electrical lines. Access for installation and maintenance of service fixtures is obtained by removing the exterior side panel.

Interior Lighting

A two tube fluorescent light fixture illuminates the interior of the Perchloric Acid Fume Hood. The fixture is mounted behind a sealed safety glass panel to isolate the fixture from corrosive fumes and flammable vapors. Replacement of fluorescent tubes is accomplished from the exterior top front of the Fume Hood superstructure.

Options

A variety of optional service fixtures are available from BMC. The location of the fixtures must be specified for accurate cutting of the mounting holes located in the Fume Hood lining.

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